“Stokes’s law”的概念、定义、翻译、参考文献-科学参考

Stokes’s law

Chemical Engineering

An equation based on a small particle suspended in a fluid to accelerate from stationary to achieve its terminal velocity. The equation suggests that the terminal velocity is reached after an infinite period of time but is usefully expressed as:
$v_{t} = \frac{g (ρ_{p} - ρ) d_{p}^{2}}{18 μ}$

where g is gravitational acceleration, $ρ_{p} - ρ$ is the difference in density between the particle and fluid, d_p is the diameter of the particle and μ is the viscosity of the fluid. The particle, which is usually solid although it also applies to small bubbles and droplets, has a maximum size of particle governed by a correlation of Reynolds number based on the particle dimension and drag coefficient as:
${R e}_{p} = \frac{24}{C_{d}} \leq 0.4$

as well as a minimum size for the fluid viscosity to operate (Brownian motion). The external forces on the particles may be gravity, centrifugal, electrostatic, and magnetic. Stokes’s law is named after Sir George Stokes (1819–1903).

Geology and Earth Sciences

A law describing the rate at which suspended particles settle, formulated in 1845 by the physicist Sir George Gabriel Stokes (1819–1903). The settling velocity (V) in cm/s is calculated by V = CD², where C is a constant related to the density and viscosity of the fluid and the density of the suspension and D is the diameter of the particles (assumed to be spheres) in cm.

单词	Stokes’s law
释义	Stokes’s law Chemical Engineering An equation based on a small particle suspended in a fluid to accelerate from stationary to achieve its terminal velocity. The equation suggests that the terminal velocity is reached after an infinite period of time but is usefully expressed as: $v_{t} = \frac{g (ρ_{p} - ρ) d_{p}^{2}}{18 μ}$ where g is gravitational acceleration, $ρ_{p} - ρ$ is the difference in density between the particle and fluid, d_p is the diameter of the particle and μ is the viscosity of the fluid. The particle, which is usually solid although it also applies to small bubbles and droplets, has a maximum size of particle governed by a correlation of Reynolds number based on the particle dimension and drag coefficient as: ${R e}_{p} = \frac{24}{C_{d}} \leq 0.4$ as well as a minimum size for the fluid viscosity to operate (Brownian motion). The external forces on the particles may be gravity, centrifugal, electrostatic, and magnetic. Stokes’s law is named after Sir George Stokes (1819–1903). Geology and Earth Sciences A law describing the rate at which suspended particles settle, formulated in 1845 by the physicist Sir George Gabriel Stokes (1819–1903). The settling velocity (V) in cm/s is calculated by V = CD², where C is a constant related to the density and viscosity of the fluid and the density of the suspension and D is the diameter of the particles (assumed to be spheres) in cm.
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